pallidum
- n the inner pale yellow part of the lenticular nucleus
- The cause of the disease is a trypanosome, brother of the trypanosome which causes human sleeping sickness and distant relative of Treponema pallidum which causes syphilis.
- Man is the only natural host of the microbes, called Treponema pallidum, but some animals, notably rabbits and monkeys, can be infected with them.
- In the blood of syphilitics, they found specific antibodies (counter-substances) against Treponema pallidum, the spirochete that causes syphilis.